Some notes on Quaternions

Some Notes on Unit Quaternions and Rotation

Some notes on distributions

Formally, distributions are usually defined as continuous linear functions on a certain topological vector space of “test functions”. However, it is not surprising that useful mathematical objects such as distributions also have a natural, concrete description. We shall start from this viewpoint, and later explain the abstraction to topological vector spaces, and explain why the latter is impor...

Some Notes on Novarsenobillon

During my service i;n the Voluntary Venereal Hospital, Alipore, I had occasion to make many injections of novarsenobillon. I have kept notes of this work, and as I have now left that institution, I am summarising the practical points in the hope that my experience may be of interest to those who have less frequent opportunities of using" this drug". I have already published in the Indian Medica...

Notes on Some Remedies

investigate its toxicity to the rat. They noted that animals dying after sulphaguanidine showed goitres which on microscopical section were found to be due to hyperplasia and were practically free from colloid. The same effect was produced more or less by other sulpha drugs such as sulphadiazine and sulphapyridine, and Richter and Clisby (1942) showed that other sulphur compounds, notably thiou...

Some Notes on lattice

Trellis Graphics is implemented in S-PLUS using the traditional S graphics engine. In contrast, lattice, the implementation of Trellis Graphics in R, uses grid graphics as the underlying mechanism. Being an independent implementation, lattice differs from the original in several other aspects as well. Most of the literature available on Trellis Graphics describes the implementation in S-PLUS. T...